KR20130014832A - A repairing method of superannuated pipes - Google Patents

A repairing method of superannuated pipes Download PDF

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Publication number
KR20130014832A
KR20130014832A KR1020110076527A KR20110076527A KR20130014832A KR 20130014832 A KR20130014832 A KR 20130014832A KR 1020110076527 A KR1020110076527 A KR 1020110076527A KR 20110076527 A KR20110076527 A KR 20110076527A KR 20130014832 A KR20130014832 A KR 20130014832A
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KR
South Korea
Prior art keywords
pipe
old
thermosetting resin
repair
fiber mat
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KR1020110076527A
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Korean (ko)
Inventor
이장섭
Original Assignee
동원철강 주식회사
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Application filed by 동원철강 주식회사 filed Critical 동원철강 주식회사
Priority to KR1020110076527A priority Critical patent/KR20130014832A/en
Publication of KR20130014832A publication Critical patent/KR20130014832A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
    • F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
    • F16L55/165—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pipe Accessories (AREA)

Abstract

The present invention relates to a repair method and structure of old and broken pipes, and more preferably horizontally cut one side of the repair pipe formed of a thermosetting resin to fit the inner diameter of the old and broken pipes by non-excavation repair method. When one end of the cutout is rolled inward by elasticity and the diameter thereof becomes smaller, the water-retaining pipe is inserted into the aging and damaged pipes, and the cutouts are brought into contact with each other while being in close contact with the inner surface of the pipe, and the non-woven fabric is placed in the cutout. After attaching any one of a glass fiber mat and a carbon fiber mat, a thermosetting resin is apply | coated on it, and it is for simple repair of an old and a damaged pipe by rebonding a notch.

Description

Repairing method of superannuated pipes

The present invention relates to a repair method and structure of old and broken pipes, and more preferably horizontally cut one side of the repair pipe formed of a thermosetting resin to fit the inner diameter of the old and broken pipes by non-excavation repair method. When one end of the cutout is rolled inward by elasticity and the diameter thereof becomes smaller, the water-retaining pipe is inserted into the aging and damaged pipes, and the cutouts are brought into contact with each other while being in close contact with the inner surface of the pipe, and the non-woven fabric is placed in the cutout. After attaching any one of a glass fiber mat and a carbon fiber mat, a thermosetting resin is apply | coated on it, and it is for simple repair of an old and a damaged pipe by rebonding a notch.

Generally, various methods are used to repair and reinforce existing pipes. Among them, non-excavation repair method is proposed as a method of repairing and reinforcing the existing pipe without excavation. It is a method to repair and reinforce defects in case of partial damage or leaks caused by gaps.

In order to repair and repair the interior of the aging pipe as described above, three techniques are already known as a device for inserting a flexible tube of the 'site hardening method' into the pipe.

That is, a hydraulic pressure reversal insertion device for reversing and inserting a soft tube into a pipeline using hydraulic pressure, an air pressure reversal insertion device for reversing and inserting a soft tube into a pipeline using air pressure, or a winch dog insertion device using a towing rope.

Referring to the conventional hydraulic pressure reversing insertion device schematically, as shown in Fig. 1, a constant height (approximately 56m) in order to maintain sufficient hydraulic pressure so that the soft tube 1 can be continuously reinserted into the conduit 2. Install the reverse mount 3, the end of the flexible tube (1) to the upper end of the reverse mount 3 in a cylindrical inverted and tightly fixed to fix.

Next, if the soft tube 1 is continuously pushed by a certain amount, the soft tube 1 is flipped over and falls down by a predetermined amount while being struck down. Thereafter, the flexible tube 1 is automatically turned upside down by the weight of the water supplied by supplying water from the faucet 4, that is, the water pressure, and the device is inserted inverted along the pipeline 2. This was simply to supply water to the soft tube (1), so that the inversion by the water pressure as high as the reversing mount (3).

In addition, when the conventional air pressure reversing insertion device is schematically described, as shown in FIG. 2, the circular air pressure reversing container 5 which holds the soft tube 1 by the winding reel 6 and holds it is expanded and strengthened. The pneumatic insertion section 7 for supplying the pneumatic pressure and the vapor pressure insertion section 8 for supplying the vapor pressure for thermal curing the soft tube 1 in the conduit 2 are provided. The air pressure reversing container 5 is completely sealed by inverting the end of the flexible tube 1 in the opening and tightly binding it. In this state, by applying air pressure to the inside of the air pressure reversing vessel 5, the soft tube 1 is automatically turned upside down by the air pressure so as to be reversely inserted along the pipeline 2, and from the vapor pressure inserting portion 8 It is a device for supplying a vapor pressure to heat-set the soft tube (1) to the inner wall surface of the conduit (2). In addition, since the air pressure reversing container 5 is limited in the amount capable of holding the soft tube 1, there is a problem in that it is not possible to contain the soft tube 1 as much as necessary depending on the construction length.

In addition, when the winch dog insertion device (not shown) is schematically described, the towing rope is tied to the end of the soft tube, and the rope is passed through the old pipe to pull the rope to the winch located on the opposite side to make the soft tube old. As a device for directly inserting into the inside of the conduit, it is a non-inverting insertion device that prevents the flexible tube from inverted.

All the so-called site hardening methods described above are devices for repairing various pipe lines without digging the ground, and environmental problems (such as soil erosion and groundwater contamination due to dust, noise and vibration) in the device for replacing pipes by the excavating method. ), Logistics costs, transportation problems due to traffic distribution by road use, pavement recovery costs (shortening the life of the road), safety costs (risk of interfering with other underground materials such as gas, water, and communication) It causes a problem as described.

That is, in the hydraulic reversing insertion device, the pressure head must be maintained with the height of the reversing mount 3 to be at least 5 m in order to maintain proper hydraulic pressure. Therefore, water consumption is increased, especially in the case of the downward slope pipeline, the beginning and the end of the pipeline. There is a problem that the water pressure is changed to the end of the pipe receives a lot of water pressure so that the soft tube (1) is stretched and easy to rupture, and to solve this problem, the thickness of the soft tube has to be thickened more than necessary.

In addition, due to the buoyancy of the expanded flexible tube (1) in the pneumatic reversing inserting device, it is impossible to push out the unknown or residual water that penetrates into the aging pipes, so that the cracks and damages of the existing pipes, gaps in the seams, depressions of the connection pipes, etc. The state becomes poor, and by supplying the vapor pressure generated high temperature, high pressure there was a problem of safety during construction.

In addition, the winch tow insertion device has a problem that it is difficult to insert the traction or the soft tube is damaged due to friction between the inner wall of the existing pipe and the soft tube when the traction insert by the winch.

The present invention was created in order to solve the above problems, and simply using the maintenance tube molded of a thermosetting resin without using a soft tube that requires a variety of equipment to repair the old and broken pipes And to repair broken pipes.

That is, one side of the repair tube formed of thermosetting resin is cut horizontally in accordance with the inner diameter of the old and damaged pipes and inserted into the tube to be in close contact with each other. One is attached, and the thermosetting resin is applied thereon to rebond the cutouts so that they can be repaired.

Referring to the repair method of the old and broken pipe of the present invention for achieving the above object is as follows.

The present invention, as shown in Figure 3, the step of forming the water-retaining pipe 20 made of a thermosetting resin in accordance with the inner diameter of the aged and damaged pipe 10, and

Forming a cutout portion 21 by horizontally cutting one side of the water supply tube 20 formed of the thermosetting resin so that one side end thereof is rolled inward by elasticity and formed to have a smaller diameter;

Inserting the water supply pipe 20 in which the cutout portion 21 is formed into the old and damaged pipe 10;

The maintenance pipe 20 inserted into the old and damaged pipe 10 is brought into close contact with the pipe line to align the cutouts 21 with each other, and then the nonwoven fabric, glass fiber mat, and carbon fiber mat 30 are cut to the cutouts 21. 1) select any one of and attach it, and apply thermosetting resin 40 thereon to re-bond the cutout portion 21 of the repair pipe 20, or any one of the nonwoven fabric, glass fiber mat, and carbon fiber mat. Selecting the impregnated in the thermosetting resin outside the pipe and then attached to the cutout of the repair pipe to provide a method for repairing old and broken pipes, characterized in that the process consisting of re-joining the cutout.

In addition, the present invention forms a cutout portion 21 by horizontally cutting one side of the repair pipe 20 formed of a thermosetting resin so as to be inserted into the old and damaged pipe 10, and the cut repair The tube 20 is inserted into the old and damaged tube 10 to be in close contact with each other, and then, any one of the nonwoven fabric, the glass fiber mat, and the carbon fiber mat 30 is attached to the cutout portion 21, and thereon. Applying the thermosetting resin 40, to provide a repair structure of the old and broken tube, characterized in that the cutout portion 21 is configured to re-bond.

The present invention constructed by the above-described method is to cut the horizontal side of one side of the repair tube to be easily inserted into the inner side of the conduit formed by the thermosetting resin in accordance with the inner diameter of the old and damaged pipes to the cutout portion When one end is formed to be smaller than the diameter at the time of forming by drying in elasticity, the cut water supply tube is inserted into the inside of the pipe to fit the cutouts while being in close contact with the inside of the pipe, and the non-woven fabric and glass fiber After attaching any one of a mat and a carbon fiber mat, a thermosetting resin is applied to easily rejoin the cutouts, thereby making it easy to repair the old and broken pipes in an early time.

1 and 2 is a view showing a state that repairs the old and broken pipe in the prior art,
3 is a view showing a state of repairing old and broken pipes according to the present invention.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of the construction method for repairing old and broken pipes according to the present invention will be described in detail, the related art in the description of the present invention may blur the gist of the present invention. If it is determined that the detailed description thereof will be omitted.

In order to repair the old and broken tube according to the present invention, first, the repair tube 20 is formed of a thermosetting resin to fit the inner diameter of the old and broken tube 10. At this time, in order to repair the old and damaged pipe, the surface is cleanly pretreated so that no protrusions are formed on the inner surface of the pipe by removing foreign substances such as rust and moss generated inside the pipe.

In addition, the water supply tube 20 formed of the thermosetting resin is formed by cutting the horizontal side of one side of the water supply tube 20 horizontally so that the water pipe 20 can be easily inserted into the old and damaged pipes. .

At this time, when one side of the water supply tube 20 is cut off, one end of the cutout portion 21 forms a diameter smaller than a diameter when the inner portion is rolled and molded by elasticity.

Therefore, it can be simply inserted into the aging and broken tube 10.

Insert the water supply tube 20 with the cutout portion 21 formed as described above into the old and damaged pipe 10 to close the water supply tube 20 to the inside of the tube 10 to close the cutout portion 21. Fit together

Then, any one of the nonwoven fabric, the glass fiber mat, and the carbon fiber mat 30 is attached to the cutout portion 21 so that no leakage occurs through the cutout portion 21 of the repair pipe 20, and the thermosetting resin (top) thereon. Apply 40) and re-join the cutouts 21 in their original form.

To repair by another method, cut and insert a repair tube formed of a thermosetting resin into the inside of the pipeline, and then select any one of a nonwoven fabric, a glass fiber mat, and a carbon fiber mat from the outside, and immediately impregnate the thermosetting resin. It can also be attached by rejoining the cutouts by attaching them to the cutouts of the repair pipe inserted into the pipe.

In addition, the present invention is not limited to the old and damaged straight pipes, and the old and broken curved pipes and tee-shaped pipes and the like made of a thermosetting resin molded as described above and the old and broken curved pipes and tees as described above. It can be easily repaired by inserting into the pipe.

In this embodiment constructed as described above, the old and broken pipes were described, but not limited thereto, and all of the corroded pipes and other pipes to be repaired are included.

10. Old and damaged pipes 20. Repair pipes
21. Cutout
30. Nonwovens, Fiberglass Mats, Carbon Fiber Mats
40. Reverse hardening resin

Claims (2)

Molding the water-retaining pipe 20 with a thermosetting resin according to the inner diameter of the old and damaged pipe 10;
Forming a cutout portion 21 by horizontally cutting one side of the water supply tube 20 formed of the thermosetting resin so that one side end thereof is rolled inward by elasticity and formed to have a smaller diameter;
Inserting the water supply pipe 20 in which the cutout portion 21 is formed into the old and damaged pipe 10;
The maintenance pipe 20 inserted into the old and damaged pipe 10 is brought into close contact with the pipe line to align the cutouts 21 with each other, and then the nonwoven fabric, glass fiber mat, and carbon fiber mat 30 are cut to the cutouts 21. 1) select any one of and attach it, and apply thermosetting resin 40 thereon to re-bond the cutout portion 21 of the repair pipe 20, or any one of the nonwoven fabric, glass fiber mat, and carbon fiber mat. The method for repairing old and broken pipes, characterized in that consisting of a step of impregnating the thermosetting resin outside the pipeline and then attaching to the cutout of the repair tube to re-join the cutout. A cutout 21 is formed by horizontally cutting one side of the repair pipe 20 formed of a thermosetting resin so as to be inserted into the old and damaged pipe 10, and the cut pipe 20 is cut. After the old and broken tube 10 is inserted into close contact, the non-woven fabric, glass fiber mat, carbon fiber mat 30 is attached to the cutout portion 21, and the thermosetting resin 40 thereon. By applying, the cut structure 21 is repaired structure of the old and broken pipes, characterized in that configured to re-bond.
KR1020110076527A 2011-08-01 2011-08-01 A repairing method of superannuated pipes KR20130014832A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020110076527A KR20130014832A (en) 2011-08-01 2011-08-01 A repairing method of superannuated pipes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020110076527A KR20130014832A (en) 2011-08-01 2011-08-01 A repairing method of superannuated pipes

Publications (1)

Publication Number Publication Date
KR20130014832A true KR20130014832A (en) 2013-02-12

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KR1020110076527A KR20130014832A (en) 2011-08-01 2011-08-01 A repairing method of superannuated pipes

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KR (1) KR20130014832A (en)

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